Question

I got this non-uniform circular motion problem and I am really
lost...here it is

A car starts from rest on a curve with a radius of 190 m and
accelerates at 0.500 m/s^2. How many revolutions will the car have
gone through when the magnitude of its total acceleration is 2.90
m/s^2?

This is all the information given. I don't even have a clue about
how to start it so any help would be appreciated. And if anyone is
confused about what it means by how many revolutions I'm pretty
sure its referring to how many times it goes around a track with a
radius of 190 m